Monitoring hub



FIG. 1 is a back perspective view of the monitoring hub showing our design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a side view thereof;

FIG. 6 is an opposing side view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a top view thereof.

The broken lines shown herein are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a monitoring hub, as shown and described. 